<template>
    <div>
         <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
        <!-- 提示区域 -->
         <el-alert
    title="添加商品信息"
    type="info"
    show-icon
    :close="false"
    center>
  </el-alert>
  <!-- 步骤条区域 -->
  <el-steps :space="200" :active="activeindex-0" finish-status="success" align-center>
  <el-step title="基本信息"></el-step>
  <el-step title="商品参数"></el-step>
  <el-step title="商品属性"></el-step>
  <el-step title="商品图片"></el-step>
  <el-step title="商品内容"></el-step>
  <el-step title="完成"></el-step>
</el-steps>
<!-- tab栏区域 -->
<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top"
>
<el-tabs v-model="activeindex" :tab-position="'left'" :before-leave="beforeTabLeave" @tab-click="tabClicked"
>
    <el-tab-pane label="基本信息" name="0" >
        <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"></el-input>
        </el-form-item>
   
        <el-form-item label="商品价格" prop="goods_price">
            <el-input v-model="addForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
            <el-input v-model="addForm.goods_weight"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
            <el-input v-model="addForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
              expand-trigger="hover"
              :options="catelist"
              :props="cateProps"
              v-model="addForm.goods_cat"
              @change="handleChange"></el-cascader>
        </el-form-item>
    </el-tab-pane>
    
    
    <el-tab-pane label="商品参数" name="1">
        <!-- 渲染表单的Item项 -->
        <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox border :label="cb" v-for="(cb,i) in item.attr_vals"
                :key="i">

                </el-checkbox>
                
            </el-checkbox-group>
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品属性" name="2">
        <el-form-item v-for="item in onlyTabData" :label="item.attr_name"
        :key="item.attr_id">
            <el-input v-model="item.attr_vals"></el-input>
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品图片" name="3">
          <!--action为图片上传到后台API地址-->
        <el-upload
  :action="uploadURL"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  list-type="picture"
  :headers="headerObj"
  :on-success="handleSuccess"
  >
  <el-button size="small" type="primary">点击上传</el-button>
  <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
</el-upload>
    </el-tab-pane>
    <el-tab-pane label="商品内容" name="4">
        <!-- 富文本编辑器组件 -->
        <quill-editor v-model="addForm.goods_introduce"></quill-editor>
        <!-- 添加商品的按钮 -->
        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
    </el-tab-pane>
  </el-tabs>
</el-form>

    </el-card>
    <!-- 预览图片对话框 -->
<el-dialog
  title="提示"
  :visible.sync="previewVisible"
  width="50%"
  >
    <img :src="previewPath" alt="" class="previewimg">

</el-dialog>

    </div>
</template>
<script>
export default {
    data(){
        return {
            activeindex:'0',
            previewVisible:false,
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[],
                //图片的数组
                pics:[],
                goods_introduce:''
            },

            addFormRules:{
                goods_name:[
                    {
                        required:true,message:'请输入商品名称',trigger:'blur'
                    }
                ],
                goods_price:[
                    {
                        required:true,message:'请输入商品名称',trigger:'blur'
                    }
                ],
                goods_weight:[
                     {
                        required:true,message:'请输入商品重量',trigger:'blur'
                    }
                ],
                goods_number:[
                    {
                        required:true,message:'请输入商品数量',trigger:'blur'
                    }
                ],
                goods_cat:[
                      {
                        required:true,message:'请选择商品分类',trigger:'blur'
                    }
                ]
            },
            //商品分类列表
            catelist:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            //动态参数列表
            manyTableData:[],
            //静态属性列表
            onlyTabData:[],
            //图片上传的URL
            uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
            //图片上传组件的headers请求头对象
            headerObj:{
                Authorization:
                window.sessionStorage.getItem('token')
            },
            previewPath:''
        }
    },
    created(){
        this.getCateList()
    },
    methods:{
        //获取所有商品分类数据
        async getCateList(){
            const {data:res} =await this.$http.get('categories')
            if(res.meta.status!==200){
                return this.$message.error('获取商品分类数据失败')
            }
            this.catelist=res.data
            console.log(this.catelist);
        },
        handleChange(){
            console.log(this.addForm.goods_cat);
            if(this.addForm.goods_cat.length!==3){
                this.addForm.goods_cat=[]
            }
        },
        beforeTabLeave(activeName,oldActiveName){
           
            if(oldActiveName==='0'&&this.addForm.goods_cat.length!==3){
                this.$message.error('请先选择商品分类')
                
            return false
            }
        },
       async tabClicked(){
            //证明访问的是动态参数面板
         if (this.activeindex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }

        console.log(res.data)
        res.data.forEach(item =>{
            item.attr_vals=
                item.attr_vals.length===0 ? [] :item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
      }else if(this.activeindex  === '2'){
           const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败！')
        }

        console.log(res.data)
        this.onlyTabData=res.data
      }
        
        },
        //处理图片预览效果
    
        //处理移除图片的操作
        handleRemove(file){
            // console.log(fie);
            //1.获取将要删除的图片的临时路径
            const filePath = file.response.data.tmp_path
            //2.从pics数组中，找到这个图片对应的索引值
            const i= this.addForm.pics.findIndex(x=>x.pics===filePath)
            //3.调用数组的splice方法，把图片信息对象，从pics数组中移除
            this.addForm.pics.splice(i,1)
            console.log(this.addForm);
        },
        handleSuccess(response){
            console.log(response);
            //1.拼接得到一个图片信息对象
            const picInfo ={pic: response.data.tmp_path}
            //2.将图片信息对象，push到pics数组中
            this.addForm.pics.push(picInfo)
            console.log(this.addForm);
        },
        //处理图片预览效果
        handlePreview(file){
         console.log(file);
        this.previewPath=file.response.data.url  
         this.previewVisible=true
        },
        //添加商品
        add(){
            this.$refs.addFormRef.validate(valid=>{
                if(!valid){
                    return this.$message.error('请填写必要的表单项')
                }
            })
        }
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length===3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    }
}
</script>
<style lang="less" scoped>
.el-checkbox {
    margin: 0 10px 0 0 im !important;
}
.previewimg {
    width: 100%;
}
.btnAdd {
    margin-top: 20px;
}
</style>